GB2046157A - Bolster arrangement for opposed slide double acting press - Google Patents
Bolster arrangement for opposed slide double acting press Download PDFInfo
- Publication number
- GB2046157A GB2046157A GB8004575A GB8004575A GB2046157A GB 2046157 A GB2046157 A GB 2046157A GB 8004575 A GB8004575 A GB 8004575A GB 8004575 A GB8004575 A GB 8004575A GB 2046157 A GB2046157 A GB 2046157A
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- United Kingdom
- Prior art keywords
- bolster
- frame
- press
- press according
- wedge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
- B30B15/028—Loading or unloading of dies, platens or press rams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/04—Movable or exchangeable mountings for tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
- B30B1/28—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks the cam, crank, or eccentric being disposed below the lower platen or table and operating to pull down the upper platen or slide
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Presses And Accessory Devices Thereof (AREA)
- Press Drives And Press Lines (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Description
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GB 2 046 157 A 1
SPECIFICATION
Bolster Arrangement for Opposed Slide Double Acting Press
The present invention relates to the art of presses and, more particularly, to opposed slide double acting presses having a bolster assembly between the slides.
The present invention finds particular utility in connection with opposed slide double acting presses having a bolster assembly between the slides and which bolster assembly and slides support corresponding tooling which is cooperable to cut a circular blank from flat sheet metal and to draw the circular blank to a cup-shaped contour. Accordingly, the invention will be disclosed and described in detail with regard to a press and tooling construction for this purpose. At the same time, it will be appreciated that the bolster arrangement in accordance with the present invention can be employed with opposed slide double acting presses in which tooling on the bolster assembly and slides is cooperable to perform work other than the cutting and drawing of sheet metal blanks.
Double acting presses having opposed vertically reciprocable upper and lower slides and an intermediate bolster assembly are advantageous for a number of reasons in connection with metalworking operations which require the characteristics of a double acting press, namely a first slide having tooling cooperable with tooling on the bolster to cut and hold a blank and a second slide having tooling cooperable with tooling on the bolster to form or shape the blank. Among the advantages of an opposed slide double acting press having an intermediate bolster assembly is the fact that both slides have a maximum tool supporting area available for use, whereby a larger number of articles can be produced during each cycle of press operation. A further advantage resides in the fact that the two slides in an opposed slide construction are independently supported for reciprocation relative to the press frame, thus avoiding undesirable guidance and vibration characteristics encountered in connection with the inner slide of a conventional double acting press wherein the outer slide is guided by the frame and the inner slide is guided by the outer slide. Still further, in an opposed slide double acting press in which the slides move toward and away from the intermediate bolster assembly acceleration and deceleration forces of the slides tend to cancel each other whereas in a double acting press in which both slides move in the same direction, the acceleration and deceleration forces of the slides are partially additive.
It is of course well known that press tooling such as blank cutting dies, forming dies, drawing dies and drawing punches require frequent inspection to determine the condition thereof and, when necessary, removal of the tooling is required for repair and/or replacement purposes. In an opposed slide double action press, such inspection of the tooling while the latter is within the confines of the press is extremely difficult, especially where such inspection requires determination of the condition of interior portions of die cavities or the like. Furthermore, such inspection of tooling within the confines of the press is time consuming and subjects personnel to potential hazardous working conditions. The removal of tooling from the slides and bolster of an opposed slide double action press, and the replacement of such tooling is both difficult and time consuming and also subjects workmen to hazardous working conditions. In this respect, the position of the bolster between the upper and lower slides confines the available working space to that between the opposite sides of the bolster and the corresponding slide member. Thus,
access to fasteners such as bolts which must be removed to achieve release of tooling components is restricted, whereby such removal is both tedious and time consuming.
Even though the tooling components may be mounted on a common support member for removal from one of the slides or bolster as a unit, such removal heretofore hs required the use of exterior handling equipment, and the manoeuvring of such handling equipment and a tooling unit during an assembly or disassembly operation. These procedures, in addition to being time consuming and hazardous, require the exercise of care to avoid damage to the tooling components by engagement thereof with other press components. Even if the bolster is mounted on the press frame in a manner which enables removal of the bolster to increase the available work space with respect to tooling on the press slides, such removal of the bolster heretofore has been a time consuming operation and, again, requires the use of special exterior handling equipment for such removal and replacement and, additionally, the provision of a special bench or support on which the bolster can be placed after removal. Further, the bolster often has tooling on the underside thereof, whereby the special support must enable access to the underside, or the bolster must be further manipulated once removed from the press to gain access to such tooling. Moreover, even though the bolster may be so removed, the tooling on the slides must be released and removed by independent operations.
In accordance with the present invention there is provided a press comprising a frame, upper and lower slides supported by the frame means for vertical reciprocation, bolster means supported for horizontal displacement relative to the frame from a first position between said upper and lower slide means and a second position outwardly adjacent said frame means, and releasable means for securing the bolster means in said first position with respect to the frame, and drive means for reciprocating said upper and lower slide means toward and away from said bolster means.
With such a press the aforementioned
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problems and others heretofore encountered in connection with opposed slide double action presses are avoided or minimized by a bolster arrangement which, during press operation, is 5 releasably interengaged with the press frame and 70 which is adapted to be released and supported for displacement laterally outwardly of the press frame to facilitate inspection of tooling thereon and, if necessary, the removal of such tooling and 10 the repair and/or replacement thereof. Further, 75
while the bolster assembly is so supported laterally outwardly of the press frame, the tooling on the press slide is readily accessible for inspection in that the obstruction imposed by the 15 bolster assembly is removed. Likewise, removal of 80 the bolster assembly increases the working space available should it be necessary or desirable to remove tooling components from the slides,
either individually or as a unit, for purposes of 20 repair and/or replacement thereof. 85
In a preferred embodiment of the invention, the displacable bolster assembly facilitates the removal and insertion of an entire tooling package for the press. In this respect, tooling components 25 associated with the upper side can be mounted 90 on a common support plate releasably attached to the slide and, prior to displacement of the bolster assembly laterally outwardly of the press frame, the upper slide tooling assembly can be released 30 and supported on the upper side of the bolster 95
assembly for displacement therewith. Moreover,
tooling components associated with the lower slide can be mounted on a common support plate releasably attached to the slide, and the support 35 plate can be released and temporarily fastened to 100 the bolster assembly in suspension therebeneath for displacement therewith laterally outwardly of the press frame. When the bolster assembly is in the laterally outward position relative to the press 40 frame, the tooling assemblies for the slides can be 105 readily removed therefrom for maintenance work and the like, replaced in their supported positions with respect to the bolster assembly, and then displaced back into the press frame for 45 attachment to the corresponding slide. 110
Preferably, the bolster assembly is wedged into clamping interengagement with the press frame for stability during press operation and is adapted,
when released, to be supported by tracks 50 engaged by rollers on the bolster assembly for rolling displacement laterally outwardly of the 115 press frame. Accordingly, it will be appreciated that the bolster assembly alone can be readily released and displaced laterally outwardly of the 55 press frame to facilitate visual inspection of the slide tooling in the press, and inspection of the 120 tooling on the bolster assembly outside the press. If maintenance and/or replacement is deemed unnecessary as a result of this inspection, the 60 press can readily be prepared for further operation merely by displacing the bolster assembly back 125 into the press frame and thence into clamping interengagement therewith. If, on the other hand,
closer inspection of the slide tooling, or 65 maintenance and/or replacement thereof is desired or necessary, one or both of the tooling assemblies can be released from the corresponding slide and supported on the bolster assembly for displacement therewith from the press frame. It will be appreciated, therefore, that the procedures for tooling inspection alone and/or tooling removal for inspection, repair or replacement can be achieved more readily than heretofore possible, with less likelihood of damage to tooling components, with increased safety for personnel and with reduced requirements with respect to the use of special handling equipment for supporting and displacing component parts relative to the press frame.
Thus, inspection and maintenance procedures are more efficient, maintenance costs are decreased, and maintenance time and thus down time for the press is advantageously reduced.
These and further preferred features of the invention will become clear from the following description of a preferred embodiment shown in the accompanying drawings, in which:
Figure 1 is a side elevation view, partially in section, of an opposed slide double acting press in accordance with the present invention and showing bolster support members extending laterally from the rear side of the press frame;
Figure 2 is a front elevation view, partially in section, of the press shown in Figure 1;
Figure 3 is a sectional plan view of the press and bolster arrangement taken along line 3—3 in Figure 1;
Figure 4 is a sectional elevation view showing the bolster assembly supporting the upper and lower slide tooling;
Figure 5 is a detailed side elevation view of one of the bolster support assemblies;
Figure 6 is a plan view of the support assembly shown in Figure 5;
Figure 7 is a sectional elevation view of the bolster support assembly taken along line 7—7 in Figure 5; and
Figure 8 is an end elevation view of the bolster support assembly taken along line 8—8 in Figure 5.
Description of a Preferred Embodiment
Referring now in greater detail to the drawings wherein the showings are for the purpose of illustrating a preferred embodiment of the invention only and not for the purpose of limiting the invention, an opposed slide double acting sheet metal cupping press 10 is shown in Figures 1—3 of the drawing. Press 10 includes a frame assembly comprised of lower portion 12 and spaced apart side portions 14 extending upwardly from lower portion 12. The press further includes a lower slide 16 supported for vertical reciprocation relative to the frame assembly by suitable gibbing 18, and an upper slide 20 supported for vertical reciprocation relative to the frame assembly by slide guide bars 22 extending vertically through side portions 14 of the frame assembly in slidable interengagement with corresponding upper and lower gibbing 24 and
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26, respectively. The opposite sides of slide 20 are keyed and bolted to the upper ends of guide bars 22, and counterbalancing air cylinders 26 are interposed between the upper ends of side 5 portions 14 and the upper end of slide 20.
The upper and lower slides are reciprocated relative to the frame assembly by a common crankshaft 30 having main gears 32 on the opposite ends thereof by which the crankshaft is 10 rotated. Main gears 32 are adapted to be driven in a well known manner by corresponding pinions on a common back shaft, not shown, and which shaft is driven in any suitable manner such as, for example, by an electric motor driven clutch, brake 15 and flywheel drive unit, not shown. Lower slide 16 is adapted to be reciprocated in response to rotation of crankshaft 30 by means of eccentrics 34 on the crankshaft and corresponding connecting rods 36 having their lower ends 20 pivotally associated with the eccentrics and their upper ends pivotally interconnected with the lower slide by means of pins 38. Upper slide 20 is adapted to be reciprocated in response to rotation of shaft 30 by means of eccentrics 40 which, in 25 the embodiment shown, are integral with main gears 32, and corresponding connecting rods 42 having their lower ends pivotally associated with the eccentrics and their other ends pivotally interconnected with the lower ends of guide bars 30 22 by means of pins 44.
A bolster assembly 46 is interposed between the upper and lower slides and, in accordance with the present invention, is adapted to be clampingly interengaged with the press frame 35 during press operation, and released from such interengagement and supported for lateral displacement to a position outside the frame for inspection and maintenance purposes. In the embodiment disclosed, bolster assembly 46 40 includes a horizontally extending bolster plate member 48 having laterally opposite sides adjacent side portions 14 of the frame assembly, and depending side members 50 at each side of the bolster plate. Side members 50 overlie 45 corresponding bolster assembly support members 52 which are mounted on the lower portion of the press frame assembly, and wedge members 54 are interposed between each side member 50 and the corresponding support member 52 to 50 enable elevating and lowering the bolster assembly into and out of clamping interengagement with the frame assembly. Such clamping interengagement with the press frame is achieved by vertically opposed clamping 55 surfaces on the bolster assembly and press frame which, in the embodiment disclosed, are defined ■ by upper surfaces 55 on bolster plate 48 and opposed surfaces 57 provided on side portions 14 of the frame assembly. The structure of side 60 members 50 of the bolster assembly, support members 52 and wedge members 54, and the operation thereof in connection with the foregoing functions is described in greater detail hereinafter.
65 In connection with the forming of cup-shaped blanks from sheet metal, the underside of bolster plate 48 is provided with a plurality of annular blanking ring tools 46 suitably mounted thereon, lower slide 16 is provided with a plurality of 70 corresponding blanking, holding and drawing ring tools 58, and upper slide 20 is provided with a corresponding plurality of punch members 60 which extend through openings 62 in bolster plate 48. Additionally, lower portion 12 of the 75 press frame supports a corresponding plurality of ejection posts 64. With further regard to the blanking, holding and drawing ring tools 58, the latter are suitably mounted on a common mounting or adaptor plate 66 which is releasably 80 attached to lower slide plate 68 by a plurality of bolts 70. Similarly, punches 60 are releasably attached to a common adaptor or mounting plate 72 which is detachably connected to upper slide plate 74 by a plurality of bolts 76.
85 From the foregoing description of the cupping press, and from the well known structure and operation of tooling of the character described above, it will be appreciated that a flat sheet of metal, not shown, is adapted to be introduced 90 into the press between lower slide 16 and bolster assembly 46 when the slide is in its lowermost position. Thereafter, in response to rotation of crankshaft 30, lower slide 16 is elevated for the metal sheet to be engaged between 95 corresponding tools 56 and 58 which operate to . sever a circular blank from the metal sheet and hold the blank while slide 20 descends for the corresponding punch 60 thereon to displace the blank into the cavity of tool 58 to draw the blank 100 into a cup-shaped contour. Thereafter, the slides are displaced away from one another and from the bolster assembly, and ejection post 64 removes the drawn cup from the die cavity for removal from the press.
105 As mentioned above, and as will become more apparent hereinafter, bolster assembly 46 is adapted to be released from clamping interengagement with the press frame and supported for displacement laterally outwardly of 110 the frame to the position shown by broken lines in Figure 1. In the embodiment shown, the lower and upper slide tooling assemblies, as defined by tools 58 on mounting plate 66 of the lower slide and punches 60 on mounting plate 72 of the 115 upper slide, are adapted to be supported by the bolster assembly for removal therewith from the press frame. In this respect, as will be appreciated from Figures 2 and 4 of the drawing, upper slide mounting plate 72 is adapted to be readily 120 detached from the upper slide plate 74 by the removal of bolts 76, whereby the upper mounting plate can be lowered onto the upper side of bolster plate 48 for the upper tooling assembly to be supported thereby. Likewise, mounting plate 125 66 is detached from lower slide plate 68 by removing bolts 70, whereby the mounting plate and tools 58 thereon can be temporarily attached to bolster plate 48 and supported in suspension therebeneath. Such temporary support of the 130 lower tooling assembly can be achieved in any
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suitable manner, such as through the use of clamps, bolts, tie rod arrangements, or the like. One possible support arrangement is shown for purposes of example in Figure 4. In this respect, 5 the front and rear sides of bolster plate 48 are 70
shown provided with outwardly open recesses 78 adapted to receive tie rods 80 having headed upper ends 82 engaging the upper surface of bolster plate 48. The lower ends 84 of the tie rods 10 are threaded to interengage corresponding 75
threaded openings 86 in mounting plate 66. It will be appreciated in connection with the use of such tie rods that the lower slide is inched upwardly toward the underside of bolster plate 48,
15 preferably after mounting bolts 70 are removed, 80 .and that the tie rods are introduced laterally into recesses 78 and rotated to interengage ends 84 thereof with openings 86 in mounting plate 66,
after which the slide is displaced downwardly 20 from mounting plate 66 so that the latter and the 85 tools thereon are suspended beneath the bolster plate.
The structures of one of the side members 50 of the bolster assembly and the corresponding 25 support member 52 and wedge member 54 are 90 shown in detail in Figures 5—8 of the drawing. The assemblies of these members, as seen in Figures 1—3, are disposed adjacent each of the side portions 14 of the press frame. The members 30 of each assembly are structurally alike, whereby it 95 will be appreciated that the ensuing description of the members shown in Figures 5—8 is applicable to both assemblies.
Referring now to the latter Figures, support 35 member 52 includes an inner end 88 within the 100 press frame and attached to underlying lower frame mounting blocks 12a by means of a plurality of bolts 90. The support member further includes an outer end 92 in the form of an arm 40 extending laterally outwardly of the press frame 105 from inner end 88. The inner and outer ends of the support member are provided with a continuous, horizontal track 94 adapted to support the corresponding side of the bolster 45 assembly for displacement laterally outwardly and 110 inwardly of the press frame as set forth more fully hereinafter. It will be appreciated, of course, that the two support members 52 provide laterally spaced apart parallel tracks for the latter purpose. 50 In the embodiment disclosed, side member 50 115 of bolster assembly 46 is adapted to be keyed and bolted to the underside of bolster plate 48. More particularly in this respect, side member 50 includes a body portion 96 having slots on its 55 upper side to receive keys 98 and 100, and 120
having bolt openings 102 therethrough to receive bolts by which bolster plate 48 is interconnected therewith. It will be appreciated of course that the underside of bolster plate 48 is provided with 60 corresponding key slots and with threaded 125
openings to receive the fastening bolts. Body portion 96 is laterally recessed adjacent its opposite ends, and a roller 104 is mounted in each recess by means of a corresponding axle pin 65 106. When the bolster assembly is released from 130
interengagement with the press frame, rollers 104 are adapted to support the bolster assembly for rolling movement along track 94 between the inner and outer ends of the track. Outer portion 92 of support member 52 is preferably provided with an upwardly extending projection 108 adapted to be engaged by the roller 104 at the corresponding end of the bolster assembly to limit outward movement of the bolster assembly relative to the press. Further, inner end 88 of support member 52 is provided with a stop plate 110 attached thereto in a position to engage the corresponding end of body portion 96 of side member 50 to limit movement of the bolster assembly inwardly of the press frame and to properly position the bolster assembly within the frame for clamping interengagement therewith.
When the bolster assembly is positioned within the press frame it is elevated to disengage rollers 104 from track 94. Such elevation of the bolster assembly brings opposed surfaces 55 and 57 of the bolster assembly and press frame into interengagement, thus to clampingly interengage the bolster assembly with the press frame during press operation. In the preferred embodiment, such elevating and clamping interengagement is achieved by a wedging arrangement including wedge member 54 which is mounted on inner end 88 of support member 52 laterally inwardly of track 94. More particularly, inner end 88 of support member 52 is provided with a wedge receiving recess 112 extending parallel to track 94. Wedge member 54 is slidably received in recess 112 and is provided at its inner end with an operating stem 114 extending freely through an opening 116 in inner end 88 of the support member. Stem 114 is externally threaded to receive an operating nut 118 adapted to facially engage the outer surface of inner end 88 of the support member. Rotation to advance nut 118 in the direction of such facial engagement is adapted to axially displace wedge member 54 from right to left as viewed in Figure 5. The outer end of wedge member 54 is provided with an operating stem 120 which extends freely through an opening 122 in side member 50 of the bolster assembly. Operating stem 120 is externally threaded to receive an operating nut 124 which facially engages the outer surface of slide member 50. Accordingly, rotation to advance nut 124 in the direction of such facial engagement displaces wedge member 54 from left to right in Figure 5.
Wedge member 54 underlies body portion 96 of side member 56 when the bolster assembly is positioned at the inner end of track 94. Upper surface 126 of wedge member 54 is of inverted V-shape in cross section and inclines downwardly in the direction from the inner end thereof towards the outer end, and the overlying portion of side member 50 of the bolster assembly is provided with an inverted V-shaped recess 128 which inclines downwardly in the direction from the inner end of the side portion toward the outer end thereof. It will be appreciated that surface
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126 and recess 128 are of corresponding cross-sectional configuration and incline for cooperative interengagement to achieve elevation and lowering of the bolster assembly.
In the positions of the component parts shown in Figures 5—8 of the drawing, the inner end of the bolster assembly abuts stop blocks 110 of support members 52, and wedge members 54 are axially positioned relative to side portions 50 of the bolster assembly and inner ends 88 of support members 52 such that wedging surfaces 126 and 128 interengage and support the bolster assembly in its elevated position relative to the press frame. In such position of the bolster assembly, as described hereinabove, rollers 104 are elevated from tracks 94 and upper surfaces 55 of the bolster assembly are clampingiy interengaged with press frame surfaces 57, whereby the bolster assembly is positioned and supported for press operation. When it is desired to release the bolster assembly for displacement laterally outwardly of the press frame, operating nuts 124 are removed from stems 120 and operating nuts 118 are rotated relative to stems 114 in the direction to displace wedge members 54 to the left in Figure 5. it will be appreciated that such displacement of wedge members 54 lowers the bolster assembly for rollers 104 to engage tracks 94, whereafter the bolster is free to be displaced laterally outwardly of the press frame in rolling engagement with tracks 94.
When it is desired to re-engage the bolster assembly and press frame, the bolster assembly is moved back into engagement with stop blocks 110 and operating nuts 124 are threaded onto stems 120 and advanced into facial engagement with the outer ends of side members 50. Thereafter, operating nuts 124 are advanced in the direction of such facial engagement to displace wedge members 54 to the right in Figure 5, whereby wedging surfaces 126 and 128 interengage to elevate the bolster assembly into clamping interengagement with the press frame. It will be appreciated of course that operating nuts 118 will either be removed from stems 114 or displaced toward the outer ends thereof to facilitate displacement of wedge members 54 to the right in Figure 5 during elevating of the bolster assembly and, after elevation of the bolster assembly, will be advanced into facial engagement with inner ends 88 of the support members to axially lock the wedge members in place during press operation.
In the embodiment disclosed, wherein the tooling associated with the upper slide of the press is a plurality of punches extending through corresponding openings in the bolster assembly, it will be appreciated that the upper tooling assembly would be released from the upper slide as described herein and supported on the upper side of the bolster assembly for removal therewith from the press frame. At the same time, it will be understood that this requirement with regard to the upper slide tooling is peculiar to the specific tooling arrangement necessary to operate the disclosed press as a cupping press, and that tooling arrangements could be employed with the press slides which would enable removal of the bolster assembly independent of the slide tooling. In this respect, for example, the upper and lower sides of the bolster plate of the bolster assembly could be provided with independent tooling each cooperable with tooling on the corresponding slide and the component parts of which tooling sets would be free of interference or interengagement with one another when the slides were positioned away from the bolster plate. Such an arrangement would enable removal of the bolster assembly alone to a position laterally outwardly of the frame for inspection of the tooling thereon and would facilitate visual inspection of the tooling on the press slides without removal thereof. At the same time, it will be appreciated that such a tooling arrangement would also enable release of the tooling assemblies on the slides and the support thereof on and under the bolster assembly for removal and return of the entire tooling package for the press.
While particular emphasis has been placed on the structure of the preferred embodiment and the structural interrelationship between the component parts thereof, many changes can be made in the preferred embodiment without departing from the principles of the present invention. In this respect, for example, it will be appreciated that the support members 52 could be formed integral with the press frame as opposed to being separate therefrom and mounted thereon and that, with such a construction or the construction shown herein, wedge members 54 are in effect interposed between the bolster assembly and press frame so as to achieve the desired clamping interengagement of the bolster assembly and frame. Thus, it will be further appreciated that wedge members 54 could be mounted directly on and supported by the press frame as opposed to being mounted on support members 52. With further regard to the wedge members, the latter could be slidably mounted on the bolster assembly rather than on the support members, and the inclined wedging surfaces could be provided on the wedge members and the support members rather than the wedge members and bolster assembly. Still further, while rollers 104 are preferred in order to minimize the work required to displace the bolster assembly along tracks 94, it will be appreciated that the bolster assembly could be slidably interengaged with the support members. Moreover, withregard to the roller support arrangement and clamping of the bolster assembly to the press frame, the rollers could be displaceable relative to the bolster assembly so as to lower the latter onto the support members, and the clamping surfaces of the press frame could be defined by clamping elements displaceable into engagement with the bolster assembly. Furthermore, while it is preferred to provide for the bolster plate of the
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bolster assembly to be detachably secured to side members 50 on which the rollers are mounted and which provide wedging surfaces 128 in the preferred embodiment, it will be appreciated that 5 the rollers and wedging surfaces could be provided on the sides of a bolster plate alone, or that the sides of a bolster plate could be provided with depending side portions corresponding to side members 50 but formed integrally with the 10 plate portion. These and other modifications will be obvious or suggested from the description herein of the preferred embodiment of the present invention.
Since many embodiments of the present 15 invention can be made, and since many changes can be made in the embodiment herein illustrated and described, it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the present 20 invention and not as a limitation.
Claims (18)
1. A press comprising a frame, upper and lower slides supported by the frame means for vertical reciprocation, bolster means supported for
25 horizontal displacement relative to the frame from a first position between said upper and lower slide means and a second position outwardly adjacent said frame means, and releasable means for securing the bolster means in said first position 30 with respect to the frame, and drive means for reciprocating said upper and lower slide means toward and away from said bolster means.
2. A press according to claim 1, wherein vertically opposed clamping surfaces are provided
35 on said frame and bolster means, and releasable means are arranged to elevate and lower said bolster means to bring said clamping surfaces into and out of engagement with one another.
3. A press according to claim 2, wherein said 40 releasable means includes wedge means interposed between said frame and bolster means.
4. A press according to claim 3, wherein said wedge means includes a wedge member
45 reciprocable relative to said frame in the direction between said first and second positions of said bolster means, said wedge member having an inclined upper surface engageable with inclined lower surface on said bolster means for elevating 50 and lowering said bolster means in response to reciprocation of said wedge member.
5. A press according to any one of claims 1 to 4, wherein said bolster means is supported for horizontal displacement by a track mounted on
55 the frame and roller means carried on the bolster means.
6. A press according to claim 1, wherein said bolster means is supported for horizontal displacement by a track on the frame and roller
60 means carried on said bolster means.
7. A press according to claim 6, wherein said releasable means are operable to displace relatively vertically said roller means and said track when said bolster means is in said first 65 position.
8. A press according to claim 7, wherein said releasable means is arranged to elevate and lower said bolster means relative to said track means, and opposed surfaces on said frame and bolster
70 means interengage in response to elevation of said bolster means.
9. A press according to claim 8, wherein said releasable means includes wedge member displaceable relative to said track and bolster
75 means, and arranged to cooperate with a wedge surface on said bolster means.
10. A press according to claim 6, wherein horizontally spaced apart tracks are provided on said frame, the bolster means has rollers for
80 engaging said tracks, said frame and bolster means having cooperable clamping surfaces which are vertically opposed when said bolster means is in said first position, and the releasable means is arranged to elevate and lower said 85 bolster means in said first position for moving said opposed clamping surfaces into and out of clamping engagement and moving said rollers into and out of engagement with the tracks.
11. A press according to claim 10, wherein 90 said releasable means includes vertically opposed wedge surfaces between said frame and bolster means adjacent said tracks, and means for displacing one of said wedge surface means horizontally relative to the other when said bolster 95 means is in said first position.
12. A press according to claim 11, wherein the opposed wedge surfaces are provided by inclined surfaces on said bolster means, and by wedge members slidable relative to said tracks and
100 having surfaces correspondingly inclined with respect to said inclined surfaces on said bolster means.
13. A press according to claim 10, wherein a pair of horizontally spaced apart bolster support
105 members are mounted on said frame, said support members providing respective horizontally extending parallel tracks including inner portions between said upper and lower slides and outer portions extending outwardly of 110 said frame, said bolster means includes a horizontal plate portion and side portions each depending from said plate portion, a pair of said rollers are mounted on each of said side portions for engaging a respective track to support said 115 bolster means for rolling movement between the first position on said inner portions of said tracks and the second position on said outer portions of said tracks, a horizontally displaceable wedge member is supported by each support member 120 laterally adjacent the inner portion of the corresponding track, each said wedge member underlying the adjacent side portion of said bolster means when said bolster means is in said first position, each said support member and the 125 corresponding wedge member and side portion of said bolster means have surfaces interengageable when said bolster means is in said first position for elevating and lowering said bolster means in
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response to displacement of said wedge members, the clamping surfaces on said frame and bolster means interengaging upon elevation of said bolster means by said wedge members to 5 releasably clamp said bolster means to said frame.
14. A press according to claim 13, wherein each said wedge member and the corresponding side portion of said bolster means have
10 correspondingly inclined surfaces which slidably interengage to elevate and lower said bolster means in response to displacement of said wedge members.
15. A press according to claim 13 or 14,
15 wherein each said wedge member is disposed laterally inwardly of the inner portion of the respective track.
16. A press according to any one of claims 10 to 15, wherein each said track has stop means at
20 the opposite ends thereof to limit rolling movement of said bolster means in opposite directions along said tracks.
17. A press according to any one of claims 1 to 9, wherein said bolster means supports first tool
25 means cooperable with second and third tool means releasably attached to said upper and lower slides, respectively, and said bolster means is adapted to support said second and third tool means for movement with said bolster means
30 between said first and second positions thereof when said second and third tool means are released from the respective slides.
18. A press substantially as herein described with reference to the drawings.
Printed for Her Majesty's Stationery Office by the Courier Press, Leamington Spa, 1980. Published by the Patent Office, 25 Southampton Buildings, London, WC2A 1 AY, from which copies may be obtained.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/028,274 US4238950A (en) | 1979-04-09 | 1979-04-09 | Bolster arrangement for opposed slide double acting press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2046157A true GB2046157A (en) | 1980-11-12 |
Family
ID=21842516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8004575A Withdrawn GB2046157A (en) | 1979-04-09 | 1980-02-12 | Bolster arrangement for opposed slide double acting press |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4238950A (en) |
| CA (1) | CA1116999A (en) |
| DE (2) | DE8007669U1 (en) |
| GB (1) | GB2046157A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2147842A (en) * | 1983-05-19 | 1985-05-22 | Amada Co Ltd | Apparatus for processing a workpiece |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4318295A (en) * | 1980-05-27 | 1982-03-09 | Danly Machine Corporation | Driving assembly for power press producing slow-down on closure of dies |
| US4791803A (en) * | 1985-11-28 | 1988-12-20 | Hatebur Umformmaschinen Ag | Die-change device for a multi-stage forming machine |
| US4947673A (en) * | 1989-04-13 | 1990-08-14 | Connell Limited Partnership | Removable slide presses |
| US5269059A (en) * | 1992-04-13 | 1993-12-14 | Schuler Incorporated | Method of installing a slide locking mechanism in a press |
| US5852970A (en) * | 1995-11-27 | 1998-12-29 | The Minster Machine Company | Underdrive opposing action press |
| US6477945B1 (en) * | 1999-09-07 | 2002-11-12 | Aida Engineering, Ltd. | Double-action mechanical press |
| DE502004005039D1 (en) | 2004-11-17 | 2007-10-31 | Bruderer Ag | Multistage press |
| EP2008799A1 (en) * | 2007-06-28 | 2008-12-31 | Bruderer Ag | Die cutting press |
| CN101342799B (en) * | 2007-07-12 | 2011-02-16 | 天津市天锻压力机有限公司 | Composite slide block with filling type and pressing function |
| DE102012000127A1 (en) * | 2012-01-06 | 2013-07-11 | Gea Cfs Germany Gmbh | Packaging machine with a cutting station |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US25427A (en) * | 1859-09-13 | Improvement in tobacco-presses | ||
| US487271A (en) * | 1892-12-06 | Sheet-metal-stampxng press | ||
| US1849670A (en) * | 1930-05-10 | 1932-03-15 | Rudolph W Glasner | Machine for forming brake drums |
| US2150890A (en) * | 1934-07-19 | 1939-03-14 | British Hygienic Containers Lt | Apparatus for working sheet material |
| US2245573A (en) * | 1938-01-29 | 1941-06-17 | Ajax Mfg Co | Forging press |
| US2411503A (en) * | 1941-01-03 | 1946-11-26 | Crown Cork & Seal Co | Cupping press |
| US2913946A (en) * | 1956-08-22 | 1959-11-24 | Philco Corp | Die handling mechanism for facilitating insertion and removal thereof in presses |
| US3134350A (en) * | 1961-05-02 | 1964-05-26 | Danly Mach Specialties Inc | Carrier clamp for quick die change press |
| US3371515A (en) * | 1966-02-07 | 1968-03-05 | Niagara Machine & Tool Works | Die loading apparatus for power presses |
| US3427854A (en) * | 1967-03-28 | 1969-02-18 | Bliss Co | Movable bolster for presses |
| US3422660A (en) * | 1967-04-27 | 1969-01-21 | Bliss Co | Movable bolster lowering arrangement |
| US3422661A (en) * | 1967-06-02 | 1969-01-21 | Bliss Co | Movable press bolster |
| US3498102A (en) * | 1967-07-17 | 1970-03-03 | Bliss Co | Method and apparatus for die changing |
| US3422662A (en) * | 1967-08-01 | 1969-01-21 | Bliss Co | Movable bolster |
| US3427855A (en) * | 1967-11-08 | 1969-02-18 | Bliss Co | Movable bolster for presses |
| US3841141A (en) * | 1973-07-09 | 1974-10-15 | S Rachwal | Die changing apparatus |
| US3889515A (en) * | 1974-07-22 | 1975-06-17 | Nat Machinery Co | Wedging structure for presses or the like |
| US4026226A (en) * | 1976-03-01 | 1977-05-31 | American Can Company | Press apparatus and method utilizing same |
-
1979
- 1979-04-09 US US06/028,274 patent/US4238950A/en not_active Expired - Lifetime
-
1980
- 1980-01-31 CA CA000344796A patent/CA1116999A/en not_active Expired
- 1980-02-12 GB GB8004575A patent/GB2046157A/en not_active Withdrawn
- 1980-03-20 DE DE19808007669U patent/DE8007669U1/en not_active Expired
- 1980-03-20 DE DE19803010631 patent/DE3010631A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2147842A (en) * | 1983-05-19 | 1985-05-22 | Amada Co Ltd | Apparatus for processing a workpiece |
Also Published As
| Publication number | Publication date |
|---|---|
| DE8007669U1 (en) | 1980-06-12 |
| CA1116999A (en) | 1982-01-26 |
| DE3010631A1 (en) | 1980-10-23 |
| US4238950A (en) | 1980-12-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |